Direct numerical simulations are used to study the effect of intraventricular flow patterns on the pumping efficiency and the blood mixing and transport characteristics of the left ventricle. The simulations employ a geometric model of the left ventricle which is derived from contrast computed tomography. A variety of diastolic flow conditions are generated for a fixed ejection fraction in order to delineate the effect of flow patterns on ventricular performance. The simulations indicate that the effect of intraventricular blood flow pattern on the pumping power is physiologically insignificant. However, diastolic flow patterns have a noticeable effect on the blood mixing as well as the residence time of blood cells in the ventricle. The implications of these findings on ventricular function are discussed.
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November 2013
Research Article|
August 23 2013
Effect of diastolic flow patterns on the function of the left ventricle
Jung Hee Seo;
Jung Hee Seo
1Department of Mechanical Engineering,
Johns Hopkins University
, Baltimore, Maryland 21218, USA
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Rajat Mittal
Rajat Mittal
a)
1Department of Mechanical Engineering,
Johns Hopkins University
, Baltimore, Maryland 21218, USA
2Institute for Computational Medicine,
Johns Hopkins University
, Baltimore, Maryland 21218, USA
Search for other works by this author on:
a)
Author to whom correspondence should be addressed. Electronic mail: [email protected]
Physics of Fluids 25, 110801 (2013)
Article history
Received:
January 02 2013
Accepted:
May 10 2013
Citation
Jung Hee Seo, Rajat Mittal; Effect of diastolic flow patterns on the function of the left ventricle. Physics of Fluids 1 November 2013; 25 (11): 110801. https://doi.org/10.1063/1.4819067
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